For a highway bridge over a railroad, the governing regulation is Â§646.214(a)(2), The State transportation agency should follow its normal specifications, design standards, and guidelines for Federal-aid highway projects.
Pregnancy in dogs typically lasts 63 days (about nine weeks). The duration of a dog's pregnancy can fall in the range of 58 to 68 days.Though estrus (heat cycles) can vary from breed to breed, the normal gestation period falls within the same range for all dogs, regardless of breed.1  Most dogs will show no signs of pregnancy in the first several weeks.ow Long is a Dog's Pregnancy? Pregnancy in dogs typically lasts 63 days (about nine weeks). The duration of a dog's pregnancy can fall in the range of 58 to 68 days. Though estrus (heat cycles) can vary from breed to breed, the normal gestation period falls within the same range for all dogs, regardless of breed.
The gestation period for canines is significantly shorter than that of humans, lasting just over two months. During that time, the pregnant mother will exhibit symptoms of pregnancy and may require a high-protein diet and an increase in food amount. A veterinarian can help you predict the due date of your dog's puppies.